From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0552BC4320A for ; Wed, 11 Aug 2021 09:36:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9AA760F11 for ; Wed, 11 Aug 2021 09:36:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236661AbhHKJg3 (ORCPT ); Wed, 11 Aug 2021 05:36:29 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:42664 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236605AbhHKJg2 (ORCPT ); Wed, 11 Aug 2021 05:36:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1628674565; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=yiNoHAcyou5Ou5txT8iiagT+7oEX1cAH3gpbVtY4zz4=; b=dftK5sFXrennQ6xQ4ggjHzA+RUMX1XIgocx9LzJJuPT49XLgLpS0Qzi+nmB/cS95VBZdQZ G9LVOpzVf91bczS1fIOmoilB4D9WWESx96jiGDCvo7EHEZ5srbf/v3uQ8CY/c3gnWqwNcH yug2NhjC5eDs8PDwBb01YOm6rLgpRU4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-295-h_CveXh8MYqqsgCZvVLxhQ-1; Wed, 11 Aug 2021 05:36:04 -0400 X-MC-Unique: h_CveXh8MYqqsgCZvVLxhQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E78CD801A92; Wed, 11 Aug 2021 09:35:59 +0000 (UTC) Received: from localhost (unknown [10.39.192.118]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F2FB9620DE; Wed, 11 Aug 2021 09:35:51 +0000 (UTC) From: Cornelia Huck To: Jason Gunthorpe , David Airlie , Tony Krowiak , Alex Williamson , Christian Borntraeger , Jonathan Corbet , Daniel Vetter , Diana Craciun , dri-devel@lists.freedesktop.org, Eric Auger , Eric Farman , Harald Freudenberger , Vasily Gorbik , Heiko Carstens , intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, Jani Nikula , Jason Herne , Joonas Lahtinen , kvm@vger.kernel.org, Kirti Wankhede , linux-doc@vger.kernel.org, linux-s390@vger.kernel.org, Matthew Rosato , Peter Oberparleiter , Halil Pasic , Rodrigo Vivi , Vineeth Vijayan , Zhi Wang Cc: "Raj, Ashok" , Christoph Hellwig , Leon Romanovsky , Max Gurtovoy , Yishai Hadas , Zhenyu Wang Subject: Re: [PATCH v4 08/14] vfio/pci: Move to the device set infrastructure In-Reply-To: <8-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com> Organization: Red Hat GmbH References: <8-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com> User-Agent: Notmuch/0.32.1 (https://notmuchmail.org) Date: Wed, 11 Aug 2021 11:35:50 +0200 Message-ID: <87zgtouxvt.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Thu, Aug 05 2021, Jason Gunthorpe wrote: > From: Yishai Hadas > > PCI wants to have the usual open/close_device() logic with the slight > twist that the open/close_device() must be done under a singelton lock > shared by all of the vfio_devices that are in the PCI "reset group". > > The reset group, and thus the device set, is determined by what devices > pci_reset_bus() touches, which is either the entire bus or only the slot. > > Rely on the core code to do everything reflck was doing and delete reflck > entirely. > > Signed-off-by: Yishai Hadas > Reviewed-by: Christoph Hellwig > Signed-off-by: Jason Gunthorpe > --- > drivers/vfio/pci/vfio_pci.c | 162 +++++++--------------------- > drivers/vfio/pci/vfio_pci_private.h | 7 -- > 2 files changed, 37 insertions(+), 132 deletions(-) Reviewed-by: Cornelia Huck